Karl Deisseroth has become an essential name in neuroscience after getting recognised with the 2026 Nobel Prize in Medicine and Physiology alongside Peter Hegemann and Georg Nagel.
Researchers' phenomenal work on optogenetics has revolutionised how scientists study and control the brain.
1. Who is Karl Deisseroth?
Deisseroth is an American scientist, psychiatrist and neurosurgeon, who is well-recognised for his research into the biological mechanisms behind brain function and mental disorders.
He is a professor at Stanford University and has spent a substantial part of his career exploring how individual neurons communicate and form complex brain circuits.
2. What is optogenetics?
Optogenetics is a technique that allows scientists to control specific nerve cells using light.
It combines genetics with light-sensitive proteins, letting scientists to easily activate and silence certain neurons with remarkable accuracy.
The method developed from research by Hegemann and Nagel, who found channelrhodopsins, light-sensitive proteins found in algae.
3. How did Deisseroth transform the discovery?
Deisseroth assisted in turning the discovery into a robust neuroscience tool. His team launched genes responsible for light-sensitive proteins into nerve cells.
Scientists could then utilise light to influence those cells and observe how changes affected the behaviour.
This opened a door to the latest way to probe the relationship between individual neural circuits and certain functions.
4. What can optogenetics reveal?
Researchers have used optogenetics to probe brain circuits linked to pain, movement, appetite, attention, and social behaviour.
Additionally, the technique also assisted scientists study neurological and psychiatric conditions, including depression and Parkinson’s disease.
5. Why does the Nobel Prize matter?
The Nobel Prize recognises optogenetics as a significant advance in neuroscience. Beyond enhancing scientists' understanding of the brain, the technique could contribute to cutting-edge treatments for neurological disorders.
Researchers are exploring optogenetic approaches to restore limited vision in people with specific forms of blindness.
Deisseroth’s work demonstrates how a discovery involving microscopic proteins can ultimately reshape the study of the human brain.
